Unix Programmer's Manual(PDF) (1st ed.). Bell Labs. 3 November 1971. p. write(1). Archived from the original(PDF) on 9 July 2016. Retrieved 9 July 2016.
Unix Programmer's Manual(PDF) (1st ed.). Bell Labs. 3 November 1971. p. write(1). Archived from the original(PDF) on 9 July 2016. Retrieved 9 July 2016.